Sukhoi Su-17

Su-17/-20/-22
Sukhoi Su-22M4, Czech Republic - Air Force (cropped).jpg
A Su-22M4 of the Czech Republic
RoleFighter-bomber
National originSoviet Union
ManufacturerSukhoi
First flight2 August 1966
Introduction1970
StatusIn limited service
Primary usersSyrian Air Force
Iranian Air Force
Polish Air Force
Peruvian Air Force
Vietnam People's Air Force
Produced1969–1990
Number built2,867
Developed fromSukhoi Su-7

The Sukhoi Su-17 (NATO reporting name: Fitter) is a Soviet variable-sweep wing fighter-bomber developed from the Sukhoi Su-7. It enjoyed a long career in Soviet, later Russian, service and was widely exported to Eastern Bloc, Arab air forces, Angola and Peru as the Su-20 and Su-22. It is the first variable-sweep wing of Russian/Soviet origin.

Development

A Su-20 (left) next to an older, similar Su-7BKL.

Seeking to improve low-speed and take-off/landing performance of the Su-7B fighter-bomber, in 1963 the Sukhoi OKB with input from TsAGI created a variable-sweep wing technology demonstrator. The Su-7IG (internal designation S-22I, NATO designation "Fitter-B"), converted from a production Su-7BM, had fixed inner portions of the wing with movable outer segments which could be swept to 28°, 45°, or 62°.[1] A fixed inner wing simplified construction, allowing the manufacturer to retain the Su-7 landing gear and avoiding the need for complex pivoting underwing hardpoints, and it minimized the shift in the center of pressure relative to the center of mass with change in wing sweep.[2] The new wing also had extensive leading-edge slats and trailing-edge flaps. Su-7IG first flew on 2 August 1966 with V. S. Ilyushin at the controls, becoming the first Soviet variable geometry aircraft.[2] Testing revealed that take-off and landing speeds had decreased by 50–60 km/h (31–37 mph) compared to the conventional Su-7.[2]

The production aircraft was named Su-17 (NATO designation "Fitter-C", factory designation S-32) and was unofficially dubbed Strizh (Стриж, martlet) in service. Aside from the new wing, it differed from its predecessor Su-7 in having a new canopy and a dorsal fuselage spine for additional fuel and avionics. The Su-17 first flew on 1 July 1969 with E. K. Kukushev at the controls.[2]

A total of 2,867 Su-17 and its variants were built, of which 1,165 were exported to 15 nations.[2]

Other Languages
العربية: سوخوي سو-17
azərbaycanca: Su-17
български: Су-17
čeština: Suchoj Su-17
Deutsch: Suchoi Su-17
español: Sukhoi Su-17
فارسی: سوخو-۱۷
français: Soukhoï Su-17
hrvatski: Suhoj Su-17
Bahasa Indonesia: Sukhoi Su-17
italiano: Sukhoi Su-17
עברית: סוחוי 17
magyar: Szu–22
Bahasa Melayu: Sukhoi Su-17
Nederlands: Soechoj Soe-17
polski: Su-17
português: Sukhoi Su-17
română: Suhoi Su-17
русский: Су-17
Simple English: Sukhoi Su-17
slovenščina: Suhoj Su-17
српски / srpski: Сухој Су-17
svenska: Suchoj Su-17
українська: Су-17
Tiếng Việt: Sukhoi Su-17